Stiffness; rigidness; as Gorgonian rigor.

In medicine, a sense of chilliness, with contradiction of the skin; a convulsive shuddering or slight tremor, as in the cold fit of a fever.

Stiffness of opinion or temper; severity; sternness. All his rigor is turned to grief and pity.

Severity of life; austerity; voluntary submission to pain, abstinence or mortification.

Strictness; exactness without allowance, latitude or indulgence; as the rigor of criticism; to execute a law with rigor; to enforce moral duties with rigor.

violence; fury.

Hardness; solidity.

Severity; asperity; as the rigors of a cold winter.